Rheem 72V20-1 - Manuals

Installing the water heater. The location chosen for the water heater must take into consideration the following: Local Installation Regulations The installation of this water heater mustbe in accordance with the ManufacturedHome Construction and Safety Standard(Title 24, CFR; Part 3280) and thefoll...

Installing the water heater. 6 Thermal Expansion Water Supply Connections NOTICE: Do not apply heat tothe HOT or COLD waterconnections. If sweatconnections are used, sweattubing to adapter before fittingadapter to the waterconnections on heater. Anyheat applied to the watersupply fittings willperman...

WARNING: The pressure rating of the relief valve mustnot exceed 150 PSI, themaximum working pressure ofthe water heater as marked on the rating plate. A new combination temperature and pressure relief valve, complying with the Standard for ReliefValves and Automatic Gas Shut-Off Devices for Hot Wate...

8 Installing the water heater. Typical Side Connect Installation Anode To electricaldistribution panel Electrical junction box (use only copper conductors) Temperature & pressure relief valve Union To cold water supply Relief valve discharge line. Directed to under side of home. Union Hot water ...

9 Branch Circuit Sizing and Wire Size Guide Total Water Recommended Over Current Protection Copper Wire Size AWG Based Heater Wattage (fuse or circuit breaker amperage rating) on N.E.C. Table 310-16 (75°C) 120V 208V 240V 120V 208V 240V 1500* 20 15 15 12 14 14 1700 20 15 15 12 14 14 2000 25 15 15 10 ...

10 Installing the water heater. For increased energy efficiency, somewater heaters have been supplied withtwo 24” sections of pipe insulation. Please install the insulation, according tothe illustrations above, that best meetsyour requirements. R E L I E F V A L V E CO LD HOT Typical vertical piping...

Heat Trap For increased energy efficiency, somewater heaters have been supplied withfactory installed internal or external heattraps in the hot outlet and cold water inletopenings. NOTICE: Do not apply heat to the HOT orCOLD water connections. If sweatconnections are used, sweat tubing toadapter bef...

12 Safety Precautions Do turn off power to water heater if it has been subjected to over heating,fire, flood, physical damage. Do Not turn on water heater unless it is filled with water. Do Not turn on water heater if cold water supply shut-off valve is closed. If there is any difficulty inunderstan...

13 If adjustment is necessary… Turn off the power to the waterheater. Remove the jacket access panel(s)and insulation exposing thethermostat(s). The thermostat protective cover(s)should not be removed. Using a small screwdriver, set thethermostat(s) dial pointer(s) to the desired temperature. Replac...

Routine Preventative Maintenance Properly maintained, your water heaterwill provide years of dependable trouble-free service. It is suggested that a routine preventivemaintenance program be established andfollowed by the user. It is further recommended that a periodicinspection of the operating cont...

Problem Possible Causes What To Do Rumbling noise Water conditions in your ● Remove and clean the heating elements. home caused a build up ofscale or mineral depositson the heating elements. Relief valve Pressure build up caused ● This is an unacceptable condition and must be producing popping by th...

17 Replacement Parts. For 20–52 gallon models with single or double elements. TU RN OF F PO WE R BE FO RE SE RV ICIN G 140 130 120 110 100 90 T H E R M - O - D I S C R E SE T R E SE T 140 130 120 110 100 90 T H E R M - O - D I S C TU RN OF F PO WE R BE FO RE SE RV ICIN G Instructions For Placing a P...

18 Cavity Insert Instructions The following instructions are intended for qualified service personnel ONLY, and should only be done when necessary. In order to replace the thermostat or heating element,remove the cavity insert crossbar by following theinstructions below: Turn off the power to the wa...

19 IF YOU NEED SERVICE 1. Should you have any questions about your new water heater, or if it requiresadjustment, repair, or routine maintenance, it is suggested that you first contactyour installer, plumbing contractor or previously agreed upon service agency. Inthe event the firm has moved, or is ...